...variety is the spice of life...on 40M I use a NVIS (8 - 1/2wave
elements in phase 15ft above the ground), when short skip isn't in I use
rotating dipole at 60ft, for longer skip I use a Cage Vertical. Some
days on some stations all three antennas are about the same....other
days there is as much as a 20-30db difference between the NVIS and
Dipole on some stations.
My station is Internet remoted and I monitor the station with a local
receiver. There are days when I can't hear my xmit signal 50 miles away
using the NVIS and there are days when the signal from the Internet
remote is pinning the needle. There are days when I can't hear the
station using the NVIS but can here it using the dipole.
Part of the fun is not knowing what the ionousphere is going to do with
the signal. Where the NVIS high angle (80-90 degrees) of radiation may
just go straight up and away the low angle from the dipole (35-50
degrees) gets reflected back and can be heard. It's great fun working
40m during the bottom of the cycle. You never know what the conditions
are going to be like and which angle of radiation is going to work most
effectively.
...thank goodness monogomy doesn't apply to antennas - you can have as
many as you like ;-)
73,
dave
wa3gin
doc wrote:
>NVIS is not an all-purpose antenna, it is a specific-purpose
>antenna.
>
>
>
>
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Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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